JPH0720704Y2 - LED element mounting structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an LED element in a device for displaying the operating states of switches and various sensors by lighting the LED element.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a conventional LED element mounting structure. LED element 4 on mounting plate 2
・ Mounting holes 12 ・ 14 ・ 16 for mounting 6 ・ 8 ・ 10
・ 18 is provided, and the rear surface of each LED element 4, 6, 8, 10 is a through hole 28, 30, 32, 34 smaller than the rear surface.
The holding plate 20 having the is attached to the mounting plate 2 for positioning.

The terminals A and B of the LED elements 4 to 10 are pattern terminals a and B of the circuit board 36 which are fixedly connected to the mounting plate 2.
Soldered to b.

[0004]

Conventionally, the LED element 4 to
Each of the terminals A and B of 10 is configured to be appropriately cut to a length from the mounting position of the LED element to the pattern terminals a and b of the circuit board 36 and coupled to the pattern terminals a and b. When the length of the terminals A and B is cut longer than a predetermined length, a short circuit between the terminals A and B may occur as shown in FIG.

The LED elements 4 to 10 are positioned and fixed by screwing the holding plate 20 to the mounting plate,
Since the circuit board 36 and the battery box (not shown) also had to be fixed by screws, there was a problem in that there were many mounting steps. An object of the present invention is to prevent a short circuit between terminals of an LED element and to reduce the number of screw fixing steps.

[0006]

In order to achieve the above object, in the present invention, a circuit board for controlling the lighting of an LED element, a tubular body having a mounting hole for holding the LED element, and a tubular body of the tubular body are provided. A pressing plate that covers the back surface and a protruding portion near the pattern terminals of the circuit board to which the adjacent terminals of the LED element are joined,
And a short-circuit prevention protrusion for preventing a short circuit between the adjacent terminals by being arranged between the adjacent terminals,
A short circuit between the LED element terminals can be prevented.

Further, the mounting structure is provided with an engaging hole on the back surface for engaging with the short-circuit preventing protrusion, and is disposed on the upper surface of the mounting plate and mounted by the same coupling means as the holding plate. The mounting structure including the box can reduce the number of screw fixing steps.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment according to the present invention, and FIG. The same members as those of the conventional example shown in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.
The first invention is that between the pattern terminals a and b of the circuit board 36 and the through holes 28, 30, 32 and 34 of the holding plate 20,
This means that short-circuit preventing projections 38, 40, 42 and 44 for preventing short circuits between the adjacent terminals of the LED elements 4, 6, 8 and 10 are provided upright in the vicinity of the pattern terminals a and b of the circuit board 36. As a result, as shown in FIG. 2, the terminals A and B of the LED element 4 housed in the tubular body 29 are reliably separated by the short-circuit preventing projection 38.

In the second invention, the battery box 46 is arranged on the holding plate 20, and the battery box 46 is screwed as shown in the drawing to fix the holding plate 20 and the battery box 46.
It means that both of them are combined at the same time. By this combination L
It is also possible to position and fix the ED elements 4, 6, 8 and 10. Also, in FIG. 1, the battery box 46 is positioned by mounting the short-circuit preventing projections 40 and 42 in the engagement holes (not shown) provided on the back surface of the battery box 46, so that the screw fixing work can be performed. It's easy.

[0010]

According to the present invention, since the short-circuit preventing protrusion is provided in the vicinity of the pattern terminal of the circuit board, the terminals are surely separated by the protrusion even if the LED element terminals are cut a little longer. Therefore, the short circuit between the terminals can be surely prevented. In addition, the battery box, by inserting the short-circuit prevention protrusion into the engagement hole provided on the back surface,
Positioning of the battery box facilitates screw fixing work.

Further, the fastening of the holding plate is completed only by fixing the battery box with screws, so that the number of steps can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of an LED element mounting structure according to the present invention.

FIG. 2 is a cross-sectional view taken along the line CC in FIG.

FIG. 3 is a plan view of a conventional LED element mounting structure.

FIG. 4 is an explanatory diagram of a short circuit state between terminals of the LED element in the conventional mounting structure.

[Explanation of symbols]

 2 Mounting plate. 4/6/8/10 LED element 20 Holding plate. 29 Cylindrical body. 36 circuit board. 38, 40, 42, 44 Short-circuit prevention projections. A / B terminals. a / b pattern terminal.

Claims (2)

[Scope of utility model registration request] 1. A circuit board for controlling lighting of an LED element,
A tubular body having a mounting hole for holding the LED element;
A pressing plate that covers the back surface of the cylindrical body and a pattern terminal of a circuit board to which a plurality of terminals of the LED element are connected are provided in a protruding manner in the vicinity of the terminals, and are arranged between the adjacent terminals to prevent a short circuit between the adjacent terminals. An LED element mounting structure comprising: a short-circuit preventing protrusion. 2. A circuit board for controlling lighting of an LED element,
A tubular body having a mounting hole for holding the LED element;
A pressing plate that covers the back surface of the cylindrical body and a projecting member provided in the vicinity of a circuit board pattern terminal to which a plurality of terminals of the LED element are coupled,
A short-circuit prevention protrusion that is disposed between the adjacent terminals to prevent a short circuit between the adjacent terminals, and an engagement hole that engages with the short-circuit prevention protrusion on the back surface are provided, and further, an upper surface of the mounting plate. And a battery box that is attached to the attachment plate by the same coupling means as the attachment plate.
Element mounting structure.